Process selection
Choose the process.
Then select the membrane.
A practical comparison of UHPRO, OARO, and LSRRO for application-specific brine concentration.
PROCESS-SELECTION NOTE
Compare complete processes, not individual membranes.
Ultra-high-pressure reverse osmosis (UHPRO), osmotically assisted reverse osmosis (OARO), and low-salt-rejection reverse osmosis (LSRRO) offer different design routes for brine concentration. The descriptions below are process-level context, not a claim that NEXT TFX supplies every complete system.
| Approach | Primary mechanism | Evaluation priority |
|---|---|---|
| UHPRO | Higher applied hydraulic pressure provides a concentration pathway. | Pressure capability, compaction resistance, feed chemistry, and complete-system rating. |
| OARO | A saline permeate-side stream reduces the osmotic-pressure difference across the membrane. | Both-side flow management, module suitability, staging, and recovery of final product water. |
| LSRRO | Deliberate salt passage reduces the osmotic-pressure difference in concentration stages. | Permeate reprocessing, recycle, stage rejection, and final water quality. |
Process context: (Wang et al., 2021); membrane pressure evidence: (Wu et al., 2025).
A COMMON BASIS
Keep the system boundary fixed.
- 01
Match the outputs
Compare the same net recovery, final concentrate, and delivered product-water quality.
- 02
Include all treatment steps
Account for recycle, permeate polishing, pumping, energy recovery, and downstream treatment.
- 03
Use a qualified membrane model
Apply appropriate flux, rejection, concentration, and operating-limit data for the actual membrane and feed.
WHERE TFX FITS
A membrane-material platform, not a universal flowsheet.
The TFX portfolio offers high-, medium-, and low-rejection development pathways. Their role in any cascade must be established by process design and element qualification. A low-rejection high-pressure stage does not, by itself, reproduce the net water quality or recovery of a complete LSRRO cascade.
Explore the BC-series development portfolio →MEMBRANE EVALUATION · PROTOTYPE ELEMENTS · PILOT PARTNERSHIPS
Frame a like-for-like process comparison.
Share the feed, flow rate, temperature, recovery target, and product-water requirement. We will help scope an application-specific evaluation.